I was originally going to use the song 3 by Britney Spears, but a lot of people use that song. So found one that hopefully not a lot of people know or used in their fanfic.

xxxxxx

Puck couldn't watch this damn movie. It was starting to melt his brain. So he decided to take matters into his own hands and started to kiss Santana. She was surprised but kissed him back. She was too emotional to push him off. And he knew it. Damn him. Brittany's eyes were wide open by then, conflicted in wanting to know where Nemo was or to watch Santana and Puck make out.

He sang into her ear, "baby girl it's on tonight, Imma keep you by my side, hold you close and do you right, turn off all the lights and lay back while I blow your mind…"

Brittany spoke, "San… Puck.."

They stopped and looked at her. Santana frowned, "something wrong?"

"No…" Brittany said blankly.

"She wants in," Puck looked at Santana.

"You should go…" Santana looked at him.

"No, he can stay… can we just… wait… until the fishes find Nemo?"

"You sure?" Puck's eyes widened in delight.

Santana nudged Puck and whispered, "B, you don't have to do anything you don't want to…"

Brittany looked at them, "I always do things I don't want to… go to school… brush my teeth..."

Puck looked at Santana for reassurance. She nodded and sat up a little, "The movie is almost over anyway…"

Puck sat back in the couch and relaxed for a while, with a smug smirk on his face. He finally got his wish. A threesome.

After the movie ended, Brittany led Santana and Puck up to her bedroom. I mean, come on, they couldn't have a threesome on the couch, they need room.

Santana and Puck looked at each other, laying down Brittany gently on the bed. Santana smiled widely at her best friend.

"If you want to back out in any way… just tell me okay, B?" she looked at her concerned.

Brittany nodded, "I… haven't done this… it sounds fun."

"It will be," Puck said confidently. He's never done this before and he's scared shitless. He's a beast when it's one on one with a girl. But with two? Not really sure how it's going to work out. He's seen plenty of porno's to go by. Hopefully it'll pay off.

"Fun like twister?" Brittany blurted out.

"Better." Santana smirked at her.

Santana kissed Brittany softly. She felt Puck kissing her neck. She turned back to face him and kissed him hungrily. Puck laid Santana down next to Brittany. They hooked pinkies immediately, both looking up at him. He slowly started to remove their clothing. He smirked at them when they were both naked. Damn, you don't even know how much he wanted to take a picture of them together looking up at him with lust filled eyes.

He worked Santana first; she was his girlfriend after all. He shuffled out of his jeans and thrusts slowly into her. Santana moans loudly and suddenly hears Brittany gasp softly. She turns her attention to her and finds that Puck has slipped fingers inside Brittany's heat.

Puck groans loudly, curling his fingers inside Brittany and thrusts deep inside Santana. Brittany holds Santana's hand tight. Santana looks into Puck's eyes and loses herself in them. She wraps her legs around his waist taking him in deeper. Brittany squeaks out a soft moan as she feels Puck's thumb rub her clit. Puck leans and kisses Santana passionately, moving his fingers inside Brittany along with his thrusts with Santana. Santana bit down on her lip hard, feeling herself tighten around Puck.

"Come for me babe," he didn't even need to say that because he knew she was close.

"God, Puck.. so good.." she murmured, gripping his shoulders.

Puck looked at Brittany, her eyes shut tight, grinding down on his hand. He turned his attention back to Santana and rubs her clit to move her along with his free hand.
It didn't take her a long time to climax.

"Shit! Puck…" she moaned loudly. She kissed him softly as he groaned and came inside her.

Santana closed her eyes and relaxed on the bed. She turned on her side to watch what he was going to do to Brittany.

He slowly removed his hand from her and thrusts deep inside of Brittany, his hands moved to Santana and massaged her breasts, thumbing them lightly. They both moaned his name at the same time. It was some freaky shit. He couldn't believe this was actually happening. A threesome. With Santana and Brittany. He was definitely the shit. It was the best night of his life.

The next day at school Puck walked down the halls with more than his usual swagger. Santana scoffed at him and pulled him aside.

"I told you not to tell anyone about Friday…" She glared at him.

"What makes you think I told anyone?"

"the way you're walking down the damn hall…" she looked at him, "if you ever want to get any of this again… you better shut up."

He groaned, "fine… and I didn't tell anyone, thank you very much." He looked at her.

She leaned up and kissed him softly, "good, I don't want anyone to take advantage of Brittany… it'll be on me if anything happens to her."

He nods, "she's your best friend, I get it… I'm surprised you even agreed to it after you got so pissed off at me for…"

"Don't say it," she glared at him.

"I won't," he looked at her, "I'll see you after practice?"

She nods at him watching him walk off. She didn't know how much longer she could hold onto Puck. He always strays somehow. She knew he was going to at least brag about the threesome to Finn. She was doubtful Finn would say anything to anyone, but if he would, she knew how to get back at him. She did take his virginity after all. And telling Rachel all about it would make his life hell.

Puck walked down the hall walking to the locker rooms, Quinn pulled him aside.

"Hey…" she smiled and bit her lip.

He swallowed and looked at her, "hi."

"How have you been?"

"good.. aren't you gonna be late for Cheerios?"

"I'm head cheerleader, practice doesn't starts when I arrive, therefore, I'm never late," she smiled at him.

He looked down at her lips. And she smiled sweetly.

"You know… you and I…" Quinn looked up at him.

"Sorry, Quinn… you might have cheated on Finn with me… but, I don't swing that way. That's not right.. I know what it feels like, my dad left for someone else. I just can't do that.."

"Then break up with her," she pursed her lips.

"You knowI don't break up with girls, I don't want them to fucking cry.. I hate that shit.."

"Then do something to piss her off and break up with you," Quinn said softly.

"You don't get it do you?" he rose his voice, "Santana is my friend and shit, I hate saying this but, I don't want to break her like so many people do to their girlfriends. I want to change. I am changing."

Santana was sent out of the gym to go find their beloved Head Cheerleader. All she saw was Puck talking secretly to Quinn. She was pissed off like you haven't seen her before. She stormed over to them and slapped Puck in the face.

"Fuck!" He yelled, "What the hell was that for?"

"You know what that was for," she glared at Quinn, "back off my man, or else."

"Or else what?" Quinn spat back.

"Shut the fuck up, Fabray," she pushed her.

He got in between them and yelled, "STOP FIGHTING!"

They stopped at looked at him strange.

"You two were best friends… what the fuck happened to that?"